41221612215 has 24 divisors (see below), whose sum is σ = 81658051488. Its totient is φ = 18844165440.

The previous prime is 41221612183. The next prime is 41221612331. The reversal of 41221612215 is 51221612214.

It is a happy number.

41221612215 is a `hidden beast` number, since 4 + 1 + 2 + 21 + 612 + 21 + 5 = 666.

It is not a de Polignac number, because 41221612215 - 2⁵ = 41221612183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65430816 + ... + 65431445.

It is an arithmetic number, because the mean of its divisors is an integer number (3402418812).

Almost surely, 2^41221612215 is an apocalyptic number.

41221612215 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

41221612215 is a deficient number, since it is larger than the sum of its proper divisors (40436439273).

41221612215 is a wasteful number, since it uses less digits than its factorization.

41221612215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130862279 (or 130862276 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

Subtracting 41221612215 from its reverse (51221612214), we obtain a palindrome (9999999999).

The spelling of 41221612215 in words is "forty-one billion, two hundred twenty-one million, six hundred twelve thousand, two hundred fifteen".